What does a solid blue line with light blue fill indicate on a map?

What does a solid blue line with light blue fill indicate on a map?

• A. Perennial ponds or streams
• B. Intermittent streams
• C. Elevation contours
• D. Political boundaries

Answer: (A)

A solid blue line with light blue fill marks a watercourse that exists year-round—a perennial stream or river. The blue color signals water, the solid line shows the channel, and the light blue fill around it indicates the wetted area along the stream. This is how maps distinguish streams that flow continually from intermittent ones, which are usually shown with dashed or dotted lines. Elevation contours are drawn in brown, not blue, and political boundaries use other colors, so they don’t match this symbol.

A solid blue line with light blue fill marks a watercourse that exists year-round—a perennial stream or river. The blue color signals water, the solid line shows the channel, and the light blue fill around it indicates the wetted area along the stream. This is how maps distinguish streams that flow continually from intermittent ones, which are usually shown with dashed or dotted lines. Elevation contours are drawn in brown, not blue, and political boundaries use other colors, so they don’t match this symbol.